"Subject to any exemption under this Act, it is an offence for a person— (a)to have in his possession, or to purchase or acquire, a firearm to which this section applies without holding a firearm certificate in force at the time, or otherwise than as authorised by such a certificate... (2)It is an offence for a person to fail to comply with a condition subject to which a firearm certificate is held by him."
"A person commits an offence if, but without authority he has in his possession or purchases or acquires ... any firearm which either has a barrel of less than 30 centimetres in length or is less than 60 metres in length overall ..."
"The authority of the Secretary of State ... is not required by virtue of subsection (1)(aba) of section 5 of the 1968 Act for a person to have in his possession, or to purchase or acquire, or to sell or transfer, a firearm if he is authorised by a firearm certificate to have the firearm in his possession, or to purchase or acquire it, subject to a condition that it is only for use in connection with the humane killing of animals."